Drifting device.



L H. COOPER.

nmrrme DEVICE,

' APPLICATIQN FILED NIB. 9. 1915. 4 7 1,245,442. Patented Nov. 6,1917.

ATTORNEY.

I. H. COOPER. DRIFTING DEVICE.

APPLICATION FILE-D FEB. 9\ 19|6.

1,245,442; Patented Nov. 6,1917.

2 SHEETS-SHEET 2.

ATTO INI v STATES'PATENT OFFICE.

Josn'rn' rLJcoornn; or rrrrs'nunen, PENNSYLVANIA,

nmrrme :onvrc'r 1',2'45;442: y mc imn of pe r mm. Patented Nov. 6, 1917.

V I i Applieationiflled February 9, 1916. Serial No. 77,170. I

To alltwhom it may concern:

Be it known that I,- JOSEPH H. COOPER, ,a citizen ofthe United States, residing at Pittsburgh, in-the county of Alleghenyv and State of Pennsylvania, have invented certaininew and. useful Improvements in Drifting Devices, of which the folloflng is aspecifi'c'ation.

invention relates to means for supplying steam mltgometite cylinders when" the locomotive is diift-ing, in; order to break ment, 1 the boiler of the locomotive; 2, 2'

are the engine cylinders carrying the pistons *3. 3; 4. Is the main steam supply pipe controlled from the usual throttle valve 5 and provided with the branches 6', 6 leading into the steam chests of the cylinders; 7 is the casing of the valve mechanism for controlling the'supplemental supply of steam, when the throttle is closed and the engine is drifting; I8 is theturret of the en 'ne supplied with saturated steam from t e steam the .l vacuum which would otherwise be dome by means of the pipe 9; 10 is the conformed, and more important prevent the drying out of the walls of the cylinders and the vaporization of theoil onsuch surfaces. The inventionhas' for its principal'cbjects the-provisionfiof a simple and reliable up paratns (1)" which will act automatically mechiinism:

to" provide an adequate 'quantity of steam whenthe throttle is closed and the engine which willproporti'on the quantity of steam suppliethto thespeed at which the vengine is driftingx f Onc'. embodiment of the inven-' tionis SllO VVnflIIthG accompanying drawingzs,--Wliei in Figuredwisua diagrammatic plan view rshowin ggthe general arrangement of the partstqmd F10,- 2 is a section on air-enla'rged, scale "through the. controlling valve The.,zini-'ention-finds its principal use in connectiohwrith. superheated steam with VOlP-ffl'OIl some point whichCthe overheatinglot; thefcylinder is greatest, andin the embodiment "illustrated, comprises a supplemental "saturated steam su pply', incanspi'o-vi detl' with two controls, one of which isclosedwhen the-locomotive throttleopcne'd andfopeneds-yvhen-the throttle is closeihfand the other of which is closed; avhcnzthe engine is standing; but is opened {p'nessiIne accumulated in; a reg)? n w the outlet side of such't' rese it rbeingr "provided passage "so that i'ili e pressure hina given-tlme'lhe re ervoir, as pre'teralily charged by; hack pres-- v sure -irom thehey "nde 'si and this back pres sure: is preferably" continued after: the tlrrottleflisclosed so that thejsecond cbllr trolling riieans ,open while the engineds drifting} I Iteferring iirst, ttgenmi win e-i is driftingand'onlv-at such-times;and(2) duit for supplying saturated :steam. from theturret to the valve casingli; .ll -Ts the outlet pipe from the casing? provide "with the branches 12, 12, and 13, 13, such branches being provided with the eheck'valves 14 't0 prevent aback-flow of pressure from the cylinders 15is a pipe leading .from one of .the hr 6 to the casing 7 and 16 is t 2: froze one end of the right- I .2 to as i sing 7 and provided with a branch 17 leading to the other end once to Fig. 2, wherein the ends of the various p pes are shown in dotted-lines. Located in the upper portion of the casing 7. as indicated in Fig. 2-,is the piston valve the How of steam 19 adapted to g over through the ports 20\ t ie valve being held in its open position as illustrated, 'by,means of the spring 21. Below the piston-valve 19 is a second pi'ston' valve 22 held in the .po-

of the cylinder, such pipesl'fi and 17 both s'ition shown by means of thespringj23, the

valve insuch position closing" the. series of ports 24 leading;' into the cavity 25 surround- .ing the ports. The-valver-c arnies at its'leftliandend a riiston headjj2 6 whose-outer end is exposed to-pressure a ,rjeserv'pir 27, The pressure is supplied to the chamber .27,

from tliepipe 16 past" the outwardly openin check valve 28 'vieldingly held closed by thespring 29/ A, bleed passage 80 leading :from the reservoir to the cavity "31' is regudated by means bi. the stud 32held in p0 'ssiti'onof adjus'tmcntbv means ofthe nut 33. r When the engine is standing fund the throttle valve 5 is closed the valve parts occupythe position indicated in Fig. Q'ithe' and no additionzil supply was added during of drifting; -What I claim is: I

t 5, 1. The combination with a locomotive, of

the rifting and proportional 'to the speed c1oure 1neens"-in' theteon dili conduit moYed to closed position by-f the positionlby cylinder back pressure 2. Thecombination 'wih e locoinotivg at tanning device comp'r i s ngiaconduit lead? 'past th t e; drifting device comprising a con'duitjlmd 1 ,ing from the boiler-for supplyingsteemtto-a; locomotive cylinder, closure means inflthe' I en the throttle is 0 1,

in closed 'oit'ion when no: steam:

1 butex posedfto cylindeg beck? 'ressure and tpen-ed o he i ing, from the boiler fon supplying stea to at? liupE locomotivecylinder, closure means 13128 i conduit, ineans'whereby th'eclo sure'meen s 1s "f'opened' when-thelocomotive throttle is clo'ed' f Hi and closed when the throttle is opened,

. l other closure'meanso in the 'conduitmovecl open position by cylinder back pressure --3?-The"combination--withe'loeomotiy a dri gdetieewmpt eieee condui 1 ing from the boilerifor supplying steam to 5 locomotive cylinder, closuxe' means in "the" l conduit, means whereby the closure means is opened when the locomotive throttle is closed and closed when" the throttle is:

opened, and other closure meansin the tom dnit'yieldingly hmemsed-whenthe; lq'cpmo ive s t n in bu moved Q'QPQ LP 'I i.

tion by cylinder back pressure when the locomotive is running. I

4:. The combinationwith a locomotiire, of 1a, drifting device comp 'ising a, conduit leade y ing from the boiler for supplying stee'm to a l locomotive cylinder, closure means' in the i conduit "moved to closed position by l the.

E'inder back pressure when {the 'locomotiyeie' di'iiitingfy L 4. 5."The combination withelocomotive, of

it drifting device comprising a conduit-1e53- A i ngtrom the boiler for euppl-ying steam to a 1 -y locolnotii e cylinder, cljosuremejans mi-the Kll ldlllt, means whereby the closure meens is 5o opcned when the locomotive throttle isclosed" and closed when the throttle is, opened, and 0t] 1i; 1" closi'l'i'e means in the conduit yieldin 'gly Qheld' closed when" the locomotive is'standing,

but moved to open position by cylinder back pressure when the locomotive; is runningv,

- nn' d'held 111 such open position by cylln'de'r bu 'ck iiressui-c when the'l'ocomoti've'is driftm' f. l j I I The combination with locomotiye, of a drifting tlevlce'comprlslnga conduit lead}.

I log from themboile'r for supplying steam to a," locomotive cylinder, closure meansy1ldin sly held open when the locomotive throttle I is closed but moved to closed'pos'ition by t5 steam :pressure on the outlet 'side of the tive- .cylindjeri bee x which the hack; check fztli'ejor pr the reservoir, of 'grfld'nzllteleflse 12. The dombinf e oithe locomotive is opened ia, ower" i lat d p e elth a. locomotive,

.o .i n pl rottl'e, and the-locomotive is 'stand- 3 .4 i v Q whe'n'tjhf locombtwe is running, ,so t "at such he combination with .a momma H pv n e ta lv s eam supply means o motive cylinderstandcontrolling' means; the'x egorclosed" automatically: when" X it-hethi-ottle;

ntu stegtm n 'eans yo held: open, and;

other 'ctontx'olli p'g nlean p xgly an e b wil nd open d yhe. su vfiliv.

lnder an controlling- W V "automat cal y, when, the thi'ot'tle valve ojf' thelocom'otive'.isiopened df, of

i forthej locomotive cylinders and controlling the accumulated pressure.

cylinder back pressure is nccumu' lated and applied to holding the valueopen I I a distance proportional to the rateut which L v ,l.7..-- T he Qombinution with a," locomotive the. back pressure is accumulated. .1

having aslippleihntal steamsupply means I folf'the locomotive cylinders and controlling means therefor open hen-the locomotive is drifting, of other controlling means'for the means;fopperinitting a gradual release of.

having a supplemental steam supply mean steqm, s1'1 pp1y means opened by locomom"? y md r baqk pv s su'r r 'y i i wh ch thebqck pressure is accumulated, and

" "means th cxtcfotopen' when the locomotivei s o othe controlling' m ansfor the ass'tg'e s: upply meansopened'bylocomo o'fitn6l ftlve cylim er""b s cl "pressure," a" es'geguoir in ling megnsfgoverne pressure'hay whichvth'c back pressure is accumulated, a c a ed .s wpfih g' o that: e amo nt, f eckwa ye ornpreysn a back fl r of openingvn'nd thefquuntity of steam puss-v the reservoir, and 'rnensfdi 'pifiiitting a 25 ing said means" is piopogtional-to the accu-. gradualrlease of the accumulated firessure.

' mulation-of b ck; pressure thercservoir 19. .The combination with a locomotive and p oportionnl-to thevspeejd of the locomohaving a supplemental steam supply means me! a fo ithetl comqtii e.cyl nde s and ont o I a {locomotive meunstheyefoi'open Whenthelocoxnotive is 30' haying.al'suppementulfstelgm;supply nstills;- drifting, loof h valve for said steam Supply v fo ri thelocom ive cylinderslilndcontl ollingj vmeans, hayingfa graduated opening apspxfmg -means therev for 'yi'cldinglyclosing the: valve,- means whereby cylinder back pressure is-acc'umu- .la-tecl' 51nd applied to hold'the valve open a v distance proportional to the rate at 'Which' the back jitessure "is accumulated; l and means whei-eby' the uccumuljntcd back pressure is e v 1 gltuli1llil3$dl 4 v The combination with "zrlocofiiotive haw ghsu iplemental steam supply means n'd' d tm pg m s h e or .yi d tl hljit' opren,iandiz'lbs dby team p es' mj m thoutlet'sideof thelocomotive throttle; of

other controlling ,mean's yieldingly held closed, u' .1"e'servo1r to which steam pressure tolling is; supplied when the locomotive throttle; is motiye is" opennnd frorn'whigihpres'sure is supplied stczyr nf supply. open snidl' other controlling means, and? mums huvingfu'graduuted opening;u spring'meuns'for-petmitting the gradual relea'seof 5o for-- yie ldingly closing tll yalvcgand. means the -fircssure in the resen'oir. I connnunicating with l locomotiye cylinglcr, M .J. H. COOPER.

7' M nat e: v-lead nngifx sawmil s m 

